Aditya Gupta supervised by Dr. Aftab M. Hussain received his Master of Science in  Electronics and Communication Engineering (ECE). Here’s a summary of his research work on  Design and Implementation of a Wi-SUN based Smart Streetlighting system with oneM2M Integration:

As urbanization continues to accelerate, the demand for energy-efficient and sustainable urban infrastructure has become paramount. Street lights are an elemental part of any city because they facilitate better night visibility, safer roads, and illumination in public areas. Also, because street lights are present homogeneously on city roads, if they are used for wireless communication, other smart nodes can leverage this infrastructure for backhaul connectivity. Here we present a smart street lighting system based on Wi-SUN (Wireless Smart Ubiquitous Network), which offers excellent redundancy owing to its use of a mesh topology. The scalability and reliability of such a large-scale IoT network depend on several factors, the most important being the communication protocol underlying the system. Wi-SUN is based on the IEEE 802.15.4g standard and uses license-free subGHz bands. We have used oneM2M as the middleware platform to enable possible interoperability with other smart city data verticals such as weather stations, environmental monitoring, crowd monitoring, among others. The proposed system provides a robust and low-cost method for controlling street lighting in any area, providing IP-addressable lighting. The proposed system additionally aims to provide consistent Wi-SUN coverage for future nodes in the area of deployment. This deployment will therefore serve as a testbed for similar evaluations in the future. Wi-SUN is a novel protocol that offers a low-power, long-range, and cost-effective solution competing with protocols such as LoRaWAN, Sigfox, and NB-IoT. It is a mesh protocol such that any node can be configured to be a transceiver. The mesh forms a destination-oriented directed acyclic graph (DODAG) with one node configured to be the border router that connects to the internet, enabling cloud access for the entire mesh. However, long connection and healing times of the DODAG are notable drawbacks. Hence, we also present experiments on a real-world deployment of a Wi-SUN network where we study patterns in the time required for each additional node to be added in the Wi-SUN network, and investigate the time required to reform a new DODAG when a node with a certain hop count is detached. IoT networks using any communication protocol require knowledge of signal propagation and attenuation in real-world scenarios. Thus, we evaluated the path loss of Wi-SUN transmissions by analysing the RSSI values inside a typical city building and an urban outdoor habitat.

January 2026